do I have to write full path for my simulation model?

There are several approaches you could take here:

1. Specify the model file as $MODELDIR/my_model.lib.scs
2. Specify the model file as my_model.lib.scs and then add $MODELDIR in the Include Paths in Setup->Simulation Files - this has been supported since IC616 ISR9 (before that ADE didn't understand use of UNIX env vars in this field)
3. Specify the model file as my_model.lib.scs and then also set the environment variable SPECTRE_DEFAULTS before starting Virtuoso:
   setenv SPECTRE_DEFAULTS -I$KITHOME/models/spectre
   (for example). This adds the specified argument (-I in this case - see "spectre -h" for more details) to the spectre command line whenever spectre is launched). It then gives the include path to be wherever you want.

Regards,

Andrew.

Hi Andrew, thanks for your suggestions. I followed your approach 3 by "setenv SPECTRE_DEFAULTS /net/artery_proj/bowhao/Process_Files/Model_Files/umc55nm_LP". and it works (log file displayed content of  "SPECTRE_DEFAULTS").

i specified model file as "sim_model.lib.scs" (full path is: /net/artery_proj/bowhao/Process_Files/Model_Files/umc55nm_LP/sim_model.lib.scs), and run simulation. while simulator failed to find it. did i missed anything, or did I set SPECTRE_DEFAULTS correctly?

Hi Andrew, thanks for your suggestions. I followed your approach 3 by "setenv SPECTRE_DEFAULTS /net/artery_proj/bowhao/Process_Files/Model_Files/umc55nm_LP". and it works (log file displayed content of  "SPECTRE_DEFAULTS").

i specified model file as "sim_model.lib.scs" (full path is: /net/artery_proj/bowhao/Process_Files/Model_Files/umc55nm_LP/sim_model.lib.scs), and run simulation. while simulator failed to find it. did i missed anything, or did I set SPECTRE_DEFAULTS correctly?

You omitted the -I before the /net/...

You should have done:

setenv SPECTRE_DEFAULTS -I/net/artery_proj/bowhao/Process_Files/Model_Files/umc55nm_LP

The -I is necessary to specify the include path.

Regards,

Andrew.

Hi Andrew, it works after I added "-I". thanks a lot. (for other viewers: it's a uppercase i, not lowercase L).

one more thing is: if i launch 2 virtuoso individually (based on 2 different process), setenv works for both virtuoso and then spectre will find model file under exactly the same path.

is there anyway to set different path for different virtuoso? so i can identify process model by path (instead of model file name), and keep model file name unchanged.

Yes, simply set the environment variable to the new value before you start the second virtuoso:

setenv SPECTRE_DEFAULTS -I/path/to/process1
virtuoso &
setenv SPECTRE_DEFAULTS -I/path/to/process2
virtuoso &

once a process is launched, you can happily change the value of an environment variable in the parent shell, because child processes inherit the environment at the time the child process was launched - further changes in the parent do not affect the child.

Regards,

Andrew.